In need of a bright spark

[down2earth]

Hi all,

I'm after some ideas to rig up some kind of alarm when a gate is opened at the end of a drive. I've missed a couple of deliveries now when I've been down one end of the garden and the van driver can't get an answer from the house, there's also the security aspect of not knowing when someone is on the premises. My theory is if I have some kind of contact on the gate, when that is broken a bell will sound (not continuously) at the back of the house. The distance from the house to the gate is approx 30 metres so most wireless stuff would struggle. I have had a look on t'internet but there doesn't seem to be anything suitable. If anyone has any good ideas with stuff I can get from Maplin or similar I would be very grateful.

Thanks
Down2earth

 

[telectrix]

PIR at the gate, obviously sited so as not to pick up outside the property. use it to trigger a 230v sounder and a floodlight if you want.

 

[down2earth]

Thankyou for that

 

[Des 56]

There are wireless motion sensors that have up to 200 meters range
These could be used to trigger the receiver,which in turn can be used to operate a sounder of your choice

 

[telectrix]

^^^^^sounds like the best and easiest way to go.

 

[down2earth]

There are wireless motion sensors that have up to 200 meters range
These could be used to trigger the receiver,which in turn can be used to operate a sounder of your choice

Sounds good, I will look into that, thankyou

 

[Des 56]

There are cheapie novelties out there
A quick shopping trip on google found this, which claims a 400 ft range
This is not a recomendation. just an example of some of the novelties around

Driveway Monitor: Amazon.co.uk: DIY & Tools

 

[down2earth]

For the money that driveway monitor looks hard to beat, thankyou for all your efforts